Hello,
There are Vets that treat pocket pets. As far as the lump it may be anything from a Cyst, Lipoma, (fatty Tumor) to a Malignant tumor. I can try and find you a list of Vets that treat exootic pets and paocet Pets. There are even Mouse and Rat organizations. This is a listing by state of Rat and Mouse Vets. The avaerage cost of a visist is about $35-$45 dollars, then the care that is needed for the lump. Please let me know if I can further assist you. Joan
http://www.aemv.org/vetlist.cfm
http://www.rmca.org/Vets/index.php?action=list
Veterinary Technician
I am Vet Tech. for 30+yrs. who works with all animals. I do alot of rescue work with small animals.